Valve mechanism fob



H. G. BLUIVIBERG.

VALVE NIECHANISM FOR GAS ENGINES.

APPLICATION FILED Nov. I2, 1914.

1,304,735. Patented May 27, 1919.

HAMILTON G. BLUMBERG, OF SAN ANTONIO, TEXAS.

VALVE MECHAN'ISM FOR GAS-ENGINS.

Specification of Letters Patent.

Patented May 27, 1919.

Application filed November 12, 1914. Serial No. 871,778.

To all whom 'it may concern Be it known that I, HAMILTON G. BLUM- l BERG, a citizen of the United States, resid- This invention relates to an ing at San Antonio, in the county of Bexar and State of Texas, have invented certain new and useful Improvements in Valve Mechanism for Gas-Engines, of which the' following is a specication.

improvement in valve mechanism for gas engines, and the object is to provide an air cooling chamber for maintaining the exhaust valve in a cooled condition under all conditions of operation.

The great difficulty encountered with the engine of general use as applied to automobiles is that the exhaust valve becomes very hot, and especially when the car is driven on heavy roads ofttimes it is necessary to grind the valves and seats after a trip, because the valves will ot seat properly, due to the overheated condition to which they have beer subjected.

This invention further consists in other novel features ofV construction and combinations of parts, which will be hereinafter fully described and pointed out in the claims.

In the accompanying drawings:

Figure 1 is a vertical sectional view;

Fig. 2 is a top plan; and Y Fig. 3 is a detail sectional view at rightangles to the section shown in Fig. 1.

Fig. 4 is a detail view of the cam shaft.

A represents the engine cylinder, to which is connected a head 1. The upper end of the cylinder head is provided with an opening 2, forming a valve-seat for a valve 3. A valvev stem 4 connected to the valve 3 is slidably mounted in the head 1, and-is maintained in its seated position by means ofl a spring 5, which surrounds the stem, and has one end thereof mounted upon the head 1, and the other terminal engaged by a washer 6 on the stem 4.

An air chamber 7 is formed above the valve3 and upper portion of the cylinder A and beneath the head 1. Intake and eX- haust valves 8 and 9 mounted in cages 14 located on. the head l open into the air chamber 7. These valves are normally seated in the cages 14 for closin intake and eX- haust ports 10 and 11. Va ve stems 12 are connected to the valves 8 and 9, and slide in the cages 14. Each valve stem 12 is encircled by a spring '13, which has a terminal mounted upon the cages 14, and the other terminal engaged by a nut 15 on the stems 12 for maintaining the springs in. position` for-normally seating the valves 8 and 9.

After an explosion, the valves 3 and 9 will be opened, and the valve 8 remain closed so that the exhaust gases will pass from the engine cylinder through the air chamber 7 and port 11 to the atmosphere. Upon the completionof the up stroke of the piston, the exhaust valve 9 closes, and the valve 3 remains open. v

The intake valve 8 will now open, moving into the air chamber 7 so that the fuel may enter the cylinder A, and upon the completion of the downstroke of the piston, the valves 3 and 8 will close.

In thismanner, both valves 8 and 9 are maintained in a cooled condition, and the only time that the hot gases come in contact with these valves 8 and 9 is when the gases pass from the engine cylinder, the main valve 3 being the'valve which is subjected to the hot gases, and while it may become heated, due to the explosions which take place in the engine cylinder, the seating of this valve will not aect the opera.

tion of the intake and exhausting of the gases as would be true if either the valves 8 or 9 were in a position to be subjected to the influence of the hot gases. y

It will therefore be seen that provision' has been made for maintaining these valves in a practically cooled condition at all times, as the chamber 7 will prevent the hot gases from coming in direct contact'with these valves excepting as the gases are discharged through the exhaust port 11 upon the openinof the valves 9 and 3.

oth of the valves 9 and 3 are of course cooled by the intake charge through the -port 10.

cylinder tively operated whereby either the intake or exhaust valve will be operated upon the operation of the main valve.

2. The combination with an engine cylinder, a head having a space formed therebetween producing an air chamber, said engine cylinder provided with an opening in communication with the air chamber, and a vertically arranged positively actuated valve for closing said opening, said head provided with intake and exhaust ports and vertically arranged positively actuated intake and exhaust valves for closing said woef/3a In testimony whereof I aflix my signature; 20

in the presence of two witnesses.

HAMILTON G. BLUMBERG.

Witnesses:

LLOYD A. DoUGLAss, WATTS T. EsTABRooK. 

